Patent US2337306A successfully refreshed from Google Patents.
US2337306A
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US
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Method and apparatus for quantitative analysis of radioactive substances
Assignee: Wyeth Holdings LLC
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Filing: 1942-03-28
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Granted: 1943-12-21
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Expires: 1962-03-28
Abstract
No abstract record available.
Inventors
- 👤 Barnes Robert Bowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:37
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; Y; Y10; Y10T; Y10T436/00; Y10T436/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-12-20 | 1947-06-21 | 1947-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-12-20 | 1951-06-21 | 1951-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-12-20 | 1955-06-21 | 1955-12-21 | $7700.00 | Window Closed / Lapsed |